you got a new fuel pump too? lol. you do it and tell me if it works! thanks!
Nah, not a fuel pump. I have injectors, distributor, some cleaner for my IACV, some seafoam to clean my intake some more..... New oil & filter... New air filter... that's about ityou got a new fuel pump too? lol. you do it and tell me if it works! thanks!
Possible but not likely in my guessing and experience... as it's not a constant problem. It's only a sporadic issue. If the problem were more predictable I'd agree...possible the fuel pump strainer is getting clogged? maybe debris in the fuel tank?
Ofcourse. It's dead-nuts-on.The O2 sensor would not be a good candidate if the problem only happens when the engine is cold.
Did you check the ignition timing with a timing gun after you installed the new distributor?
I don't understand your point. If the sensor has not yet warmed up, then the ECU ignores the O2 sensor inputs, rendering it irrelevant.O2 sensor would make sense as the sensor is not warmed up yet.
I don't understand your point. If the sensor has not yet warmed up, then the ECU ignores the O2 sensor inputs, rendering it irrelevant.
I'm pretty sure that the O2 sensor input is ignored by the ECU until the coolant temperature reaches full operating temperature. Are you still getting the O2 sensor code?True. But it's not a constant cold issue. It doesn't do it immediately after turning the car on. It does it in the first 5 miles of being driven. While the coolant may not be hot, the primary O2 sensor certainly isn't cold. I'm going to try and get a scan tool on it to observe the O2 sensor and see if it is faulty and reading lean it would cause the motor to dump extra fuel that it doesn't have enough air for and explain the fuel economy going to crap and fuel smell once in a while.... Because once I open the throttle further it adds more air and makes all the power back it previously had. If the engines warm and just turned on after a short drive it will do it again sometimes.
...it's not a constant cold issue. It doesn't do it immediately after turning the car on. It does it in the first 5 miles of being driven...If the engines warm and just turned on after a short drive it will do it again sometimes.
Congrats. Sounds like the primary O2 sensor was the problem.New O2 sensor installed. Running MUCH better so far. And hasn't hesitated yet after the first 50 miles
Raw fuel smell = gone
Gets warmer and faster ----- A more rich mixture cools the cylinders, makes sense.
Idle much smoother and higher
Throttle much more responsive
I'm not sure. It looked absolutely BLACK when I pulled it out. A good cleaning may have helped it, but a new one certainly is making a huge difference. Check it out, lmao.Congrats. Sounds like the primary O2 sensor was the problem.
The part that makes sense about your O2 sensor fix is that, based on your information, the problem occurred just when the system moved from open loop to closed loop. What's confusing is why the problem was only apparent during the transition from open to closed loop but not when the system had been in closed loop for a longer time. Do you think the carbon build up on the O2 sensor simply prevented it from making accurate O2 readings until the sensor had been heated for a long time by both the heater element and exhaust gas? If so, maybe cleaning the old O2 sensor would bring it back to life?
Or missingYeah, the sensor clearly has massive carbon build up. You must have been running rich for quite awhile. I would imagine by the looks of the sensor that the cat may be dead, cracked, or clogged.